From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f78.google.com (mail-ot1-f78.google.com [209.85.210.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8A82B26ED40 for ; Thu, 1 Jan 2026 01:20:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767230425; cv=none; b=WwOjQevsP2JicqRLwm0X8lm/xUYzWz+j+VpWHjzXNNrkP1W0eAO7wMOc4siJDZjiM2p6XUXxpR/xlLjc+P/PR7+VOn2T1BKDqhqB5Jyfbh2JY6/rEsNJd1KHUCgnwwq3YUHzrCE/bOqLBFuOs/dNewemfkOdwo9ZWSpbJWaIKnM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767230425; c=relaxed/simple; bh=FHzOIjJhJMdPw+wxvAcFflmhHzTK3yk7O1FIiZ1ii0U=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=UtXIYR+2FKV1SiOvP4cXJ4wSE8g4P+U/H67e1uk18Wv3b1gyvpKpJRtTRz/Pq9N67TeJv7PjXdcPMoQhvsl+VGhj9sTogZkKQMzFWJ0a1i/rkOKSt4b6vTrk5W2eZcEkZSwME8wPTTjn4T/7cbkBkQQgr5qIq7gn0AgrjdmvFXo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.210.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-ot1-f78.google.com with SMTP id 46e09a7af769-7c7595cde21so25240462a34.2 for ; Wed, 31 Dec 2025 17:20:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767230421; x=1767835221; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=l96xM7j24Yuz+mKcTl2sjAtipIWuU27H/Z/cgCLkeLs=; b=wgwCdddttwyaFxAV2hQt956s4xYIiV+qEp9AsdqNgDZT5EN+LS0HqK6jLNvpWef71W idlUsDBe0nYm2h6bisKDWDeZEPqwKJMiw0nf5KGfJnxLnEnLMA8GM5qTfgjzWpl1mskh fsshK7Dd45R8TECq7osTjLqzg/3Nr0FlpkOF9apgeY3BnClHXxijxAhYA0BrFc9CDb/7 8foDPOjOrdw3h+rgI3WjKY8vTXpoaBCybS4BFTrJ1qzym7UpgfjEexbDIweOL+c8ezqy wwp+xj11oRykIyTTqtGiF8c1XCUkWMVBTOtrcdeubxWwjXttHOGKS2ZIYE7QQKt8/oHj 4YJQ== X-Forwarded-Encrypted: i=1; AJvYcCWc9GJ6N/amgmUX4haTHM24nAqsAF0JSq9WmrHU+ntVAWyMPtpBIZJuhoGaCIRZGHgEMDycbuw=@vger.kernel.org X-Gm-Message-State: AOJu0YyjoWODIiPVcvZOoC3kiLsmLYjLDTcXWXEn2spKqWgPjJ2YmnCR lKEfzve+YF6yLY/YOXkDZAU6omW5uhuJxOwI7iMkMV6Chnx9D0rW/IqQpD/l/zbanrQ0iS9veoa 7owGGhyS6si1o/EmeRgTz6IuRqe0UNO94eykPYCReFbvEJzxFRVf4KT8QmZo= X-Google-Smtp-Source: AGHT+IGo81+4AP49Jo7fSsmAkXk8EECnZ2jAXv+OHIEB+7FOktV+1w2xZAkqOawB7STHXZwGgL3MoFO8rCkKaVIZk0RBE60cf1FD Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:16a4:b0:65c:fd25:f43d with SMTP id 006d021491bc7-65d0eaa182dmr17326666eaf.59.1767230421479; Wed, 31 Dec 2025 17:20:21 -0800 (PST) Date: Wed, 31 Dec 2025 17:20:21 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6955cbd5.050a0220.a1b6.032d.GAE@google.com> Subject: [syzbot] [wireless?] WARNING in rfkill_unregister From: syzbot To: johannes@sipsolutions.net, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: c53f467229a7 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16e65b92580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1f2b6fe1fdf1a00b dashboard link: https://syzkaller.appspot.com/bug?extid=16210d09509730207241 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d09cbe6bb078/disk-c53f4672.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/83e2a6822b1d/vmlinux-c53f4672.xz kernel image: https://storage.googleapis.com/syzbot-assets/9eff6dd4ff63/bzImage-c53f4672.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+16210d09509730207241@syzkaller.appspotmail.com ------------[ cut here ]------------ rtmutex deadlock detected WARNING: kernel/locking/rtmutex.c:1674 at rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1674, CPU#0: syz.7.2908/15923 Modules linked in: CPU: 0 UID: 0 PID: 15923 Comm: syz.7.2908 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:rt_mutex_handle_deadlock+0x21/0xb0 kernel/locking/rtmutex.c:1674 Code: 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 41 54 53 83 ff dd 0f 85 86 00 00 00 48 89 f7 e8 a6 39 01 00 48 8d 3d af 7c 0a 04 <67> 48 0f b9 3a 4c 8d 3d 00 00 00 00 65 48 8b 1c 25 08 10 b3 91 4c RSP: 0018:ffffc90004617710 EFLAGS: 00010286 RAX: 0000000080000000 RBX: ffffc900046177a0 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff8ce0bbf9 RDI: ffffffff8ede5760 RBP: ffffc900046178c0 R08: ffffffff8edb3477 R09: 1ffffffff1db668e R10: dffffc0000000000 R11: fffffbfff1db668f R12: 1ffff920008c2ef0 R13: ffffffff8ad3d599 R14: ffffffff8eb910e0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888126cef000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056422df5abe0 CR3: 000000005929c000 CR4: 00000000003526f0 Call Trace: __rt_mutex_slowlock kernel/locking/rtmutex.c:1734 [inline] __rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1760 [inline] rt_mutex_slowlock+0x666/0x6b0 kernel/locking/rtmutex.c:1800 __rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline] __mutex_lock_common kernel/locking/rtmutex_api.c:534 [inline] mutex_lock_nested+0x16a/0x1d0 kernel/locking/rtmutex_api.c:552 rfkill_unregister+0xd1/0x230 net/rfkill/core.c:1145 nfc_unregister_device+0x96/0x300 net/nfc/core.c:1167 virtual_ncidev_close+0x59/0x90 drivers/nfc/virtual_ncidev.c:172 __fput+0x45b/0xa80 fs/file_table.c:468 task_work_run+0x1d4/0x260 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x694/0x22f0 kernel/exit.c:971 do_group_exit+0x21c/0x2d0 kernel/exit.c:1112 get_signal+0x125d/0x1310 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x87/0x4e0 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2e7f9af749 Code: Unable to access opcode bytes at 0x7f2e7f9af71f. RSP: 002b:00007f2e7dc0e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000008 RBX: 00007f2e7fc05fa0 RCX: 00007f2e7f9af749 RDX: 0000000000000002 RSI: 0000200000000500 RDI: ffffffffffffff9c RBP: 00007f2e7fa33f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2e7fc06038 R14: 00007f2e7fc05fa0 R15: 00007fff5a2e50f8 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 41 57 push %r15 b: 41 56 push %r14 d: 41 55 push %r13 f: 41 54 push %r12 11: 53 push %rbx 12: 83 ff dd cmp $0xffffffdd,%edi 15: 0f 85 86 00 00 00 jne 0xa1 1b: 48 89 f7 mov %rsi,%rdi 1e: e8 a6 39 01 00 call 0x139c9 23: 48 8d 3d af 7c 0a 04 lea 0x40a7caf(%rip),%rdi # 0x40a7cd9 * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 4c 8d 3d 00 00 00 00 lea 0x0(%rip),%r15 # 0x36 36: 65 48 8b 1c 25 08 10 mov %gs:0xffffffff91b31008,%rbx 3d: b3 91 3f: 4c rex.WR --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup